Flexible hydrophilic polymer capable of adsorbing-desorbing anions and cations, and preparation method and application of flexible hydrophilic polymer

Abstract

The invention relates to a flexible hydrophilic polymer capable of adsorbing-desorbing anions and cations, and a preparation method and application of the flexible hydrophilic polymer. The preparationmethod of the flexible hydrophilic polymer comprises the following steps: (1) preparing a first-generation polymer; (2) preparing a third-generation polymer by taking cyanuric chloride as a core andthe first-generation polymer as a branching unit; (3) dispersing the third-generation polymer into water, adding acrylic acid, methacryloyloxyethyl trimethyl ammonium chloride, 3-trimethoxysilyl)propyl methacrylate and p-toluenesulfonic acid, and successively conducting reacting, washing and vacuum filtration to obtain the flexible hydrophilic polymer. The preparation method is simple in process and easy to operation; impurities are not introduced in the preparation process; and meanwhile, the prepared polymer material has high renewable capacity and can be repeatedly used, working efficiencyis remarkably improved in practical application, application cost is reduced, pollutants such as heavy metal ions and organic dyestuffs are adsorbed and desorbed, and removal or recovery of the pollutants is achieved.

Description

technical field [0001] The invention relates to the technical field of flexible hydrophilic polymer materials, in particular to a flexible hydrophilic polymer with adsorption-desorption anions and cations and its preparation method and application. Background technique [0002] With the rapid development of the economy, the modern industry has also made great progress, and the environmental problems caused by it have become increasingly serious. Especially the pollution of heavy metals and organic dyes has aroused widespread concern. This is because heavy metal ions cannot be decomposed and easily accumulate in organisms, and then enter the human body through the food chain, which will endanger human health. [0003] Heavy metals are substances harmful to the human body, especially heavy metals such as cadmium, chromium, and mercury are more toxic and can cause direct damage to the human body. Heavy metal wastewater from electroplating factories and circuit board factories ...

AI Technical Summary

Problems solved by technology

The disadvantage of the coagulation method is that the decolorization and COD removal are not complete, and a large amount of sludge is generated, which is easy to cause secondary pollution. At the same time, the facility occupies a large area and the process takes a long time. Attempts or applications in China, including physical adsorption decolorization, oxidative decolorization, ion exchange decolorization, membrane separation decolorization and biochemical decolorization, these technologies have not been widely used either because of unsatisfactory effects or high costs

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